Replace the front power window regulator on a 2012 Tesla Roadster. Because the Roadster is built on the Lotus Elise platform, the door internals (regulator, motor, glass run) are largely Lotus-sourced rather than Tesla-specific, so Lotus Elise/Exige service references are often more accurate than Tesla documentation for this job.

Warnings

Tools required

Parts

• Front power window regulator assembly (Roadster / Lotus Elise-pattern) × 1 — Manufacturer-specified front window regulator for 2012 Tesla Roadster — cross-reference Lotus Elise S2 equivalent if Tesla part is unavailable
• Replacement door panel clips (commonly broken on removal) × 1 — OEM door card retainer clips
• Vapor barrier butyl sealant (if barrier is disturbed) × 1 — Generic automotive butyl rope sealant

Preparation

1. Park on level ground, place in P (or in gear if manual transmission unit), engage parking brake.
2. Exit ALL doors with key fob away from the vehicle. Wait at least 2 minutes for HV systems to fully de-energize, even on this non-HV job.
3. Disconnect the 12V low-voltage battery. On the 2012 Roadster the 12V auxiliary battery is located in the front trunk area — disconnect the negative terminal first.
4. DO NOT touch, cut, or pierce ANY orange cable — these are high-voltage and lethal. The Roadster HV pack lives behind the seats; keep all tools clear of that bulkhead.
5. If at any point you encounter an orange cable, an HV component, or are unsure if a system is de-energized: STOP and consult a Tesla-certified technician.
6. Before disconnecting 12V, lower the affected window approximately halfway, then raise it fully — you will need it accessible for the regulator-to-glass fasteners. After the glass position is set, then disconnect 12V.
7. Confirm replacement regulator matches the old unit (left vs right, motor orientation, connector style) before disassembly.
8. Have painter's tape ready to secure the glass in the closed position once the regulator is unbolted.

Procedure

1. 1

   Remove door pull / armrest trim
   Open the door fully. Locate and remove the screws securing the interior door pull and any trim caps on the door card. Fasteners are typically hidden under small plastic plugs — pry these out with a plastic trim tool, do not use metal pry tools against the composite panel.
   ⚠Roadster interior trim is thin and will crack if pried with metal tools.
2. 2

   Disconnect interior door handle linkage
   Remove the interior door release bezel (typically retained by one or two small screws or clips). Disconnect the release cable from the handle mechanism by sliding it out of its retainer — note orientation for reinstallation.
3. 3

   Remove door card
   Carefully release the perimeter clips of the door card using a wide plastic trim tool, working around the edge. Lift the panel up and outward to clear the window seal. Disconnect any electrical connectors (window switch, speaker, courtesy lamp) before fully removing the panel. Set the door card aside on a soft surface.
   ⚠Expect to break 1–2 clips even with care; have replacements on hand.
4. 4

   Peel back vapor barrier
   Carefully peel the plastic vapor barrier away from the door shell, preserving the butyl sealant bead where possible. Fold it back rather than removing it entirely so it can be reseated on reassembly.
5. 5

   Secure the door glass
   With the glass in the fully-up position, tape it firmly to the upper door frame using two or three strips of painter's tape running from the outer skin, over the top of the glass, to the inner skin. The glass MUST be fully supported before the regulator is loosened.
   ⚠️If the glass drops into the door cavity, it can shatter and cause lacerations. Do not skip this step.
6. 6

   Disconnect window motor electrical connector
   Locate the window motor harness connector on the regulator assembly. Release the lock tab and disconnect. Inspect the connector for corrosion or heat damage — a failed regulator is sometimes accompanied by a melted connector that should also be replaced.
7. 7

   Release glass from regulator carrier
   Through the access holes in the inner door shell, locate the fasteners or clamps that secure the glass to the regulator's lifter carrier. Loosen these so the glass is free of the regulator but remains held by the painter's tape above. Torque on reassembly: torque to OEM specification — refer to Tesla Service Manual.
8. 8

   Unbolt regulator assembly from door shell
   Remove the bolts/nuts securing the regulator rails and motor to the inner door shell. Support the regulator with one hand as the last fastener is removed so it does not drop and damage internal door wiring.
   Torque spec

   Bracket Bolts20 Nm (15 lb-ft)
9. 9

   Extract regulator through service opening
   Maneuver the regulator/motor assembly out through the largest service opening in the inner door shell. The Roadster door has limited access — angle the assembly carefully and avoid scratching the painted outer skin from the inside.
   ⚠Cable-style regulators have spring tension. Do not let the cable drum snap free — keep the assembly oriented as removed.
10. 10

    Compare and prep new regulator
    Place the new regulator next to the old one. Confirm motor orientation, connector position, mounting hole pattern, and lifter carrier height match. Pre-position the new lifter carrier to roughly the closed-window height before installation to ease glass alignment.
11. 11

    Install new regulator
    Feed the new regulator into the door through the service opening in the same orientation as removal. Loosely start all mounting fasteners, then tighten in a cross pattern. Reconnect the motor electrical connector.
    Torque spec

    Bracket Bolts20 Nm (15 lb-ft)

    Connector Screws4 Nm (3 lb-ft)
12. 12

    Reattach glass to regulator carrier
    Lower the glass (manually or by briefly reconnecting 12V and using the switch, then disconnecting again) until the glass mounting points align with the regulator carrier. Secure the glass-to-carrier fasteners. Torque to OEM specification — refer to Tesla Service Manual.

Reassembly

1. Remove the painter's tape supporting the glass.
2. Temporarily reconnect the 12V battery and cycle the window fully up and fully down 2–3 times to confirm smooth travel and proper auto-stop at both ends. Listen for binding or rubbing at the glass run channels.
3. If travel is correct, disconnect 12V again before continuing trim reassembly.
4. Reseat the vapor barrier, pressing the butyl sealant back into place. Add fresh butyl where the original is degraded — a poor seal will allow water into the cabin and onto the underbody wiring.
5. Reconnect door card electrical connectors (window switch, speaker, courtesy lamp).
6. Align door card to clip locations and press firmly along the perimeter to seat all clips. Replace any broken clips.
7. Reinstall interior door release bezel and cable retainer.
8. Reinstall door pull/armrest hardware and trim caps. Do not overtighten fasteners into composite — torque to OEM specification — refer to Tesla Service Manual.
9. Reconnect the 12V battery (positive first, then negative).
10. Torque the 12V battery negative terminal last.
11. Battery Terminal Bolts torque: 6.0 Nm (4.0 lb-ft).

Verification

• Cycle the window through its full travel at least 5 times. It should reach hard-stop both up and down without stalling, chattering, or binding.
• On the Roadster, frameless glass must seal against the upper weatherstrip when fully up — visually confirm the top edge contacts the seal evenly across its width with the door closed.
• Close the door and run a soft spray of water along the top of the glass. Check the inside of the door card and the floor pan for leaks. Water intrusion in a Roadster can reach low-voltage harnesses and the HV pack bulkhead — do not ignore even small leaks.
• Verify the window switch operates correctly from both the door switch and (if equipped on this VIN) any auto-up/auto-down function.
• Confirm no new rattles when closing the door firmly — a loose regulator rail will buzz against the inner shell.
• Note: This job is not part of a scheduled Tesla service interval, but while the door is open, this is a reasonable opportunity to inspect the door drain holes and weatherstrip condition — both common Roadster failure points.

More procedures for this vehicle